No problem, we've got 1851 and 9858 to multiply
1851 × 9858 = 9858 × (1851)
+ 9858 × 1 that results in 9858
+ 9858 × 50 what gives us 492900
+ 9858 × 800 yielding 7886400
+ 9858 × 1000 that equals 9858000

= 18247158
